I want to translate I will cast my shadow into Latin. This phrase is inspired from a poem by Horace, that has the line:
Pulvis et Umbra Sumus
My interpretation of this is that we are simply our physical forms and whatever influence (or shadow) we have on the world around us. I will cast my shadow is then meant to be a reminder to myself to cast my shadow - to leave my mark, as it were.
My initial thought is something like this:
I'm not sure whether iacio is the right verb for throwing or casting something like a shadow, though, or whether it would even make sense in that usage.